src/gui/button.cpp

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#include "gui/gui.h"
#include "gui/button.h"
using namespace VGUI;


Button::Button( Widget* w )
{
        action = "";
        center = w->GetCenter();
        name = w->GetName();
        text = w->GetText();
        type = w->GetType();
        tip = w->GetTip();
        rel_width = w->GetRelWidth();
        rel_height = w->GetRelHeight();
        enabled = w->GetEnabled();
        selected = w->GetSelected();
        is_default = w->GetDefault();
        is_cancel = w->GetCancel();
        has_icon = w->GetHasIcon();
        width_auto = w->GetWidthAuto();
        height_auto = w->GetHeightAuto();
        down = false;
        font_size = w->GetFontSize();
        color_r = w->GetColorR();
        color_g = w->GetColorG();
        color_b = w->GetColorB();

        string skin_path = settings.GetSkinPath();
        btn_up.Load( skin_path + "/textures/widgets/btn_up.png", false );
        btn_down.Load( skin_path + "/textures/widgets/btn_down.png", false );

        tex_width = 0.0555;
        tex_height = 0.0740;

        // width = font width + width of the end caps + width of 0.01 between each cap and text
        if( width_auto )
        {
                rel_width = font.Width( text.c_str(), 1, font_size ) + tex_width;
        }

        // height = button texture height
        if( height_auto )
        {
                rel_height = tex_height;
        }
}

Button::~Button()
{
}

void Button::Draw()
{
        Draw( 1.0 );
}

void Button::Draw( float opacity )
{
        float center_x = center.GetXPercent();
        float center_y = center.GetYPercent();
        float rel_height_half = rel_height / 2.0f;
        float text_width = font.Width( text.c_str(), 1, font_size );
        float text_width_half = text_width / 2.0f;
        float text_height = font.Height( text.c_str(), 1, font_size );
        float text_height_half = text_height / 2.0f;
        float opacity_txt = selected ? 1.0 : enabled ? 0.6 : 0.4;
        float btn_opacity = selected ? 0.9 : enabled ? 0.6 : 0.4;

        TEXTURE_HANDLE * btn_tex = down ? &btn_down : &btn_up;

        // draw button face
        utility.DrawButton( center_x - text_width_half,
                            center_y - rel_height_half,
                            center_x + text_width_half,
                            center_y + rel_height_half,
                            0.02777, btn_tex, btn_opacity * opacity );

        // draw text
        font.Print( center_x - text_width_half, center_y - text_height_half, text.c_str(), 1, font_size, color_r, color_g, color_b, opacity_txt * opacity );

        // draw tip
        if( selected && ( tip != "" ) )
                font.Print( 0.5 - ( font.Width( tip.c_str(), 1, 6 ) / 2.0f ), 0.90, tip.c_str(), 1, 6, 0.7, 0.7, 0.7, 0.9 * opacity );
}

bool Button::MouseOver( float x, float y )
{
        float min_x, min_y, max_x, max_y;
        min_x = center.GetXPercent() - ( rel_width / 2.0f );
        min_y = center.GetYPercent() - ( rel_height / 2.0f );
        max_x = center.GetXPercent() + ( rel_width / 2.0f );
        max_y = center.GetYPercent() + ( rel_height / 2.0f );

        return ( x > min_x ) && ( x < max_x ) && ( y > min_y ) && ( y < max_y );
}

string Button::MousePress( float x, float y )
{
        down = true;
        return "";
}

string Button::MouseRelease( float x, float y )
{
        down = false;
        return "";
}

void Button::Press()
{
        down = true;
}

void Button::Release()
{
        down = false;
}

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